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Finding the Fourth Proportional to 561,920.76, 774,820.04 and 357,648.12

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Solution

The fourth proportional to 561,920.76, 774,820.04 and 357,648.12 is: 493,153.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,920.76 : 774,820.04 = 357,648.12 : x
  2. Step 2: Convert to fraction form
    561,920.76/774,820.04 = 357,648.12/x
  3. Step 3: Cross multiply
    561,920.76x = 774,820.04 × 357,648.12
  4. Step 4: Simplify right side
    561,920.76x = 277,112,930,644.33
  5. Step 5: Solve for x
    x = 277,112,930,644.33/561,920.76
  6. Step 6: Final answer
    x = 493,153.04

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.